Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dutch
rechtmatig
←
German
rechtmäßig
(calque)
←
Dutch
recht
(suffix)
←
Dutch
matig
(suffix)
→
Afrikaans
regmatig
(inherited)